english: The second is a population of students that studied using a standard lecture-based classroom, but with a mastery-based approach, so the students couldn't move on to the next topic before demonstrating mastery of the previous one.
non_english: Druga grupa studenata je učila na standardnom času sa predavanjima, ali sa pristupom usavršavanja, tako da studenti ne mogu da pređu na sledeću temu pre nego što predstave usavršeno znanje prve.