Which sentence provides the best supporting evidence for the claim? if students spend even 10% of their time being distracted by the opposite gender, then that is just silly. my dad has been a teacher since 1993, and i think he does fine teaching in a school that has only male students. at least 50% of my class is the opposite gender, and the amount of time they are distracted by the opposite sex is minimal. a 1993 study showed that teachers tend to favor males over females, thereby creating an inequality in mixed-gender schools.