Among the students being advised by advisors, which students' year in the program do the advisors advise the majority of?
students refers to student = 1; students' year in the program do the advisors advise the majority of refers to max(count(yearsInProgram))
SELECT T2.yearsInProgram FROM advisedBy AS T1 INNER JOIN person AS T2 ON T1.p_id = T2.p_id WHERE T2.student = 1 GROUP BY T2.yearsInProgram ORDER BY COUNT(T1.p_id_dummy) DESC LIMIT 1