CREATE TABLE budget (school_id DECIMAL, year DECIMAL, budgeted DECIMAL, total_budget_percent_budgeted DECIMAL, invested DECIMAL, total_budget_percent_invested DECIMAL, budget_invested_percent TEXT)
CREATE TABLE school (school_id TEXT, school_name TEXT, location TEXT, mascot TEXT, enrollment DECIMAL, ihsaa_class TEXT, ihsaa_football_class TEXT, county TEXT)
CREATE TABLE endowment (endowment_id DECIMAL, school_id DECIMAL, donator_name TEXT, amount DECIMAL)

What are the total and average enrollment of all schools?
SELECT SUM(enrollment), AVG(enrollment) FROM school
SELECT SUM("enrollment"), AVG("enrollment") FROM "school"