[4] Schachter served a pivotal role during the COVID-19 pandemic, publishing responsa that guided and advised Jews in their observance of halakha during an unprecedented time.

His responsa are noted for being "broad and well-sourced" in addressing various issues that Jews were facing at the time, primarily due to quarantine and other preventative measures.

[7] In monetary law and taxation, Schachter believes that a graduated system of income taxes is "fair and reasonable" as they provide various necessary services to "take care of" fellow citizens.

He did express concern that before going to the authorities, one should make sure that a potential abuse victim is credible by referring him to a competent rabbi or psychologist.

Schachter has been condemned for his use of the term shvartze (the Yiddish word for black, racially loaded when directed at a person):[16][17][18][19] "The recent use of a derogatory racial term and negative characterizations of African-Americans and Muslims, by a member of the faculty, are inappropriate, offensive, and do not represent the values and mission of Yeshiva University", a YU spokesman stated.

[21] Schachter has written more than 200 articles, in both Hebrew and English, for scholarly Torah publications such as HaPardes, HaDarom, Beit Yitzchak, and Or Hamizrach.