Create a trigger
function createTrigger() {
var ss = SpreadsheetApp.openByUrl("https://docs.google.com/spreadsheets/d/1JPtc2tD1U1jkoWhYwBx9u0U_09zfNqMu1SMEA5yWTeI/edit#gid=309407576");
ScriptApp.newTrigger('COPYaddNewStudentOnForm')
.forSpreadsheet(ss)
.onFormSubmit().create();
}