ותאמר לאברהם גרש האמה הזאת ואת בנה כי לא יירש בן האמה הזאת עם בני עם יצחק
The Chazon Ish, zl, teaches that distancing a boy from yeshivah, sending him away, is a dinei nefashos, life and death, issue. A yeshivah that sends a student away due to its inability to deal with him is similar to a hospital who refuses to treat a patient whose illness is advanced. A maggid shiur in Yeshivas Porat Yosef approached Horav Yehudah Tzadaka, zl, Rosh Yeshivah, with a request that a certain student be asked to leave the yeshivah. Rav Tzadaka asked the rebbe, “Did you pray for him? Did you fast for him? First pray and fast for him…