Which donators have a donation amount above 8.5?
select donator_name from endowment where amount > 8.5
Which school ids have at least two of those donators?
select t2.school_id from endowment as t1 join school as t2 on t1.school_id = t2.school_id where t1.amount > 8.5 group by t1.school_id having count ( * ) > 1
What are the schools names?
select t2.school_name from endowment as t1 join school as t2 on t1.school_id = t2.school_id where t1.amount > 8.5 group by t1.school_id having count ( * ) > 1