Show numerical grades that teachers have hidden on BCPS One

showGrades.user.js

// ==UserScript==
// @name           Show Hidden Grades
// @namespace      http://github.com/AstroCB
// @author         Cameron Bernhardt
// @description    Show numerical grades that teachers have hidden on BCPS One
// @version        1.0
// @include        *://bcpsone.bcps.org/student/?*
// ==/UserScript==
var grades = document.querySelectorAll("a .hidden");
for (var i = 0; i < grades.length; i++) {
	var parentEl = grades[i].parentElement;
	if (parentEl && !parentEl.innerText.match(/\(/)) {
		var grade = parseFloat(grades[i].textContent).toFixed(1);
		if (("" + grade).match(/\d+\.0/)) {
			grade = Math.round(grade);
		}
		grades[i].remove();
		parentEl.textContent += " (" + grade + "%)";
	}
}