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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>CU Boulder Grades Database</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/sql.js/1.9.0/sql-wasm.js" onload="" integrity="sha512-PAyD/84QEfxE1X/H3RDJY9kqXtJObyGq6qA93+LnkMNWdTLHjcTKHsDOcz6Y5xAdsaMGItRP5vNs4vtj3/FRuw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="sorttable.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@1.0.1/css/bulma.min.css" />
<script defer="" data-domain="web.navan.dev" src="https://plausible.io/js/script.js"></script>
</head>
<body>
<section class="section">
<div class="container">
<h1 class="title is-1"> CU Boulder Grades Database </h1>
<p class="subtitle"> Database contains data from <strong>Spring 2016</strong> to <strong>Spring 2024</strong> </p>
<p class="subtitle has-text-warning">After merging the Data & Analytics team with OIT, CU has disabled public access to the <a href="https://data.colorado.edu/reports/grade-distributions-class-size-cu-boulder-main-campus-courses">grade distribution file.</a> Until the data is made public again, this website won't be updated. You can try to e-mail them / open a request on their website, and I can update this database once the data is available again.</p>
<form>
<textarea id="output" rows="10" cols="80" class="textarea"></textarea>
<input type="text" id="query" value="SELECT COUNT(*) FROM raw_data" class="input" />
<button type="button" value="Run Raw Query" onclick="run()" class="button is-info is-loading is-fullwidth" disabled="">Run Raw Query</button>
</form>
</div>
</section>
<section class="section">
<div class="container">
<h2 class="title is-2"> Search </h2>
<h3 class="title is-3"> By Instructor </h3>
<p class="subtitle">Find classes, and average grades for a given instructor</p>
<p>Since CU provides instructor names in the format </p>
<pre>Last Name, First Name</pre> It is best if you start typing the last name first.
<p></p>
<div class="field is-grouped pt-2">
<div class="control is-expanded">
<input type="text" id="instructor" name="instructor" list="instructors" class="input" placeholder="Instructor" />
<datalist id="instructors"></datalist>
</div>
<div class="control">
<button type="button" onclick="getClassesByInstructor()" class="button is-primary is-loading" disabled="">Search</button>
</div>
</div>
<form>
<div id="table-container"></div>
</form>
</div>
<div class="container">
<h3 class="title is-3"> By Class Code </h3>
<p>There is a space between the subject and course code. For example: </p>
<pre>CSCI 1300</pre>
<p></p>
<div class="field is-grouped pt-2">
<div class="control is-expanded">
<input type="text" id="classCode" name="classCode" list="classCodes" class="input" placeholder="Class Code" />
<datalist id="classCodes"></datalist>
</div>
<div class="control">
<button type="button" onclick="getClassesByClassCode()" class="button is-primary is-loading" disabled="">Search</button>
</div>
</div>
<form>
<div id="table-container-class-codes"></div>
</form>
</div>
<div class="container">
<h3 class="title is-3"> By A&S Division </h3>
<p class="subtitle">Useful for finding electives as you can find classes, and average grade for a given A&S division</p>
<div class="field">
<label for="division" class="label">Division (AH, SS, or NS)</label>
<div class="control">
<div class="select is-fullwidth">
<select name="division" id="division"> <option value="AH">Arts & Humanities</option> <option value="SS" selected="">Social Sciences</option> <option value="NS">Natural Sciences</option> </select>
</div>
</div>
</div>
<div class="field">
<label for="grade" class="label">Upper or Lower Division</label>
<div class="control">
<div class="select is-fullwidth">
<select name="grade" id="grade"> <option value="upper" selected="">Upper Division (3XXX - 4XXXX)</option> <option value="lower">Lower Division (1XXX - 2XXX)</option> <option value="both">Both (1XXXX - 4XXXX)</option> <option value="grad">Graduate Level (>= 5000)</option> </select>
</div>
</div>
</div>
<button type="button" onclick="getClassesByDivision()" class="button is-primary is-loading is-fullwidth" disabled="">Get Classes & Average Grades</button>
<form>
<div id="table-container-division"></div>
</form>
</div>
</section>
<footer class="footer">
<div class="content has-text-centered">
<p> Data sourced from CU Boulder's <a href="https://www.colorado.edu/oda/student-data/courses">Data & Analytics</a> group. The source code is licensed <a href="http://opensource.org/licenses/mit-license.php">MIT</a> and available on <a href="https://github.com/navanchauhan/BuffClassesEDA">GitHub</a> </p>
</div>
</footer>
<script>
let SQL = undefined
let db = undefined
async function fetchDatabase(url) {
const response = await fetch(url);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const blob = await response.blob();
const buffer = await blob.arrayBuffer();
const uInt8Array = new Uint8Array(buffer);
db = new SQL.Database(uInt8Array);
// populate instructors
let query = "SELECT DISTINCT insname1 AS instructor_name FROM raw_data WHERE insname1 IS NOT NULL UNION SELECT DISTINCT insname2 FROM raw_data WHERE insname2 IS NOT NULL UNION SELECT DISTINCT insname3 FROM raw_data WHERE insname3 IS NOT NULL;"
const results = db.exec(query);
const result = results[0];
const columns = result.columns;
const rows = result.values;
let datalist = document.getElementById("instructors");
for (let i = 0; i < rows.length; i++) {
let option = document.createElement("option");
option.value = rows[i][0];
datalist.appendChild(option);
}
let classCodeQuery = "SELECT DISTINCT Subject || ' ' || Course AS ClassCode FROM raw_data"
const classCodeResults = db.exec(classCodeQuery);
const classCodeResult = classCodeResults[0];
const classCodeColumns = classCodeResult.columns;
const classCodeRows = classCodeResult.values;
let classCodeDatalist = document.getElementById("classCodes");
for (let i = 0; i < classCodeRows.length; i++) {
let option = document.createElement("option");
option.value = classCodeRows[i][0];
classCodeDatalist.appendChild(option);
}
// document.getElementById("database-loading").textContent = "Database loaded!";
let buttons = document.getElementsByTagName("button");
for (let i = 0; i < buttons.length; i++) {
buttons[i].disabled = false;
buttons[i].classList.remove("is-loading")
}
}
async function loadDatabase() {
SQL = await initSqlJs({
locateFile: file => `https://cdnjs.cloudflare.com/ajax/libs/sql.js/1.9.0/sql-wasm.wasm`
});
fetchDatabase("./grades.sqlite");
}
loadDatabase();
function run() {
const query = document.getElementById("query").value;
const results = db.exec(query);
const result = results[0];
const columns = result.columns;
const rows = result.values;
const output = document.getElementById("output");
output.value = JSON.stringify({
columns,
rows
}, null, 2);
}
function createTable(results, className, rawQuery) {
const result = results[0];
const columns = result.columns;
const rows = result.values;
const tableContainer = document.getElementById(className);
const table = document.createElement("table");
table.classList.add("sortable")
table.classList.add("table")
const thead = document.createElement("thead");
const tbody = document.createElement("tbody");
const headerRow = document.createElement("tr");
for (let i = 0; i < columns.length; i++) {
const headerCell = document.createElement("th");
headerCell.textContent = columns[i];
headerRow.appendChild(headerCell);
}
thead.appendChild(headerRow);
for (let i = 0; i < rows.length; i++) {
const row = document.createElement("tr");
for (let j = 0; j < rows[i].length; j++) {
const cell = document.createElement("td");
if (columns[j] === "YearTerms") {
cell.textContent = convertYearTerm(rows[i][j]);
} else if (!isNaN(rows[i][j]) && rows[i][j] !== null) {
cell.textContent = parseFloat(rows[i][j]).toFixed(2);
} else {
cell.textContent = rows[i][j];
}
row.appendChild(cell);
}
tbody.appendChild(row);
}
table.appendChild(thead);
table.appendChild(tbody);
tableContainer.innerHTML = "";
tableContainer.appendChild(table);
const pre = document.createElement("pre")
pre.innerHTML = "\n" + rawQuery + "\n\n\n"
const details = document.createElement("details")
const summary = document.createElement("summary")
summary.innerText = "Raw SQL Query"
details.appendChild(summary)
details.appendChild(pre)
tableContainer.appendChild(details)
}
function getClassesByInstructor() {
let instructor = document.getElementById("instructor").value;
let query = `SELECT Subject || ' ' || Course as "Class", CourseTitle as "Title", GROUP_CONCAT(DISTINCT YearTerm) AS YearTerms, ROUND(AVG(AVG_GRD), 2) AS "Average Grade", ROUND(AVG(PCT_A), 2) as "% A", ROUND(AVG(PCT_B), 2) as "% B", ROUND(AVG(PCT_C_MINUS_OR_BELOW), 2) as "% C- and below", ROUND(AVG(N_GRADE)) as "Average No. of Students" FROM raw_data AS main WHERE insname1 = "${instructor.toUpperCase()}" OR insname2 = "${instructor.toUpperCase()}" OR insname3 = "${instructor.toUpperCase()}" GROUP BY CourseTitle`
console.log(query);
const results = db.exec(query);
createTable(results, "table-container", query)
sorttable.makeSortable(document.getElementById("table-container").children[0]);
}
function getClassesByClassCode() {
let classCode = document.getElementById("classCode").value;
let query = `SELECT YearTerm as "YearTerms", insname1 as Instructor, AVG_GRD as "Average Grade", PCT_A as "% A", PCT_B as "% B", PCT_C_MINUS_OR_BELOW as "% C- and below", N_GRADE as "No. Graded" FROM raw_data WHERE Subject || ' ' || Course = '${classCode.toUpperCase()}';`
const results = db.exec(query);
createTable(results, "table-container-class-codes", query)
sorttable.makeSortable(document.getElementById("table-container-class-codes").children[0]);
}
function getClassesByDivision() {
let division = document.getElementById("division").value
let grade = document.getElementById("grade").value
switch (grade) {
case 'upper':
grade = "BETWEEN 3000 and 4999";
break;
case 'lower':
grade = "BETWEEN 0000 and 2999";
break;
case 'both':
grade = "BETWEEN 0000 and 4999";
break;
case 'grad':
grade = ">= 5000"
break;
default:
grade = ">= 0";
}
let query = `SELECT DISTINCT Subject || ' ' || Course AS "Class Code", CourseTitle as "Title", AVG(AVG_GRD) AS "Average Grade", AVG(PCT_A) as "% A", AVG(PCT_B) as "% B", AVG(PCT_C_MINUS_OR_BELOW) as "% C- and below", AVG(N_GRADE) as "No. Graded" FROM raw_data WHERE (CrsPBADiv = '${division}' AND COURSE ${grade} ) AND Subject != 'APPM' GROUP BY "Class Code", "Title"`
console.log(query);
const results = db.exec(query);
createTable(results, "table-container-division", query)
sorttable.makeSortable(document.getElementById("table-container-division").children[0]);
}
function convertYearTerm(yearTerms) {
// Convert yearTerms to a string if it's not
if (typeof yearTerms !== 'string') {
yearTerms = String(yearTerms);
}
return yearTerms.split(',').map(term => {
const year = term.slice(0, 4); // Assuming the year is 2000+
const termCode = term.slice(-1); // Getting the last character for the term
let termName = '';
switch (termCode) {
case '1':
termName = 'Spring';
break;
case '4':
termName = 'Summer';
break;
case '7':
termName = 'Fall';
break;
default:
termName = 'Unknown';
}
return `${termName} ${year}`;
}).join(', ');
}
</script>
</body>
</html>
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