#1 Best Private High Schools in Black Hawk County, IA
Cedar Valley Catholic School
Parish school · Grades Pre-K–12
The largest Catholic school in Waterloo
Waterloo, IA
BOverall grade733 students13 students per teacher
2026 lists
Best Private High Schools in Black Hawk County, IA
Private high schools in Black Hawk County, IA with the highest overall grades. Top 5 of 5 schools.
#2 Best Private High Schools in Black Hawk County, IA
Bosco Catholic School System
Parish school · Grades Pre-K–12
Smaller classes than 67% of Catholic schools in Iowa
Gilbertville, IA
BOverall grade299 students10 students per teacher
#3 Best Private High Schools in Black Hawk County, IA
Cedar Valley Catholic School System
Parish school · Grades Pre-K–12
The largest Catholic school in Waterloo
Waterloo, IA
B-Overall grade733 students13 students per teacher
#4 Best Private High Schools in Black Hawk County, IA
Immaculate Conception-St. Joseph School
Parish school · Grades K–12
Growing: enrollment up 40% since 2011–12
Gilbertville, IA
B-Overall grade280 students13 students per teacher
#5 Best Private High Schools in Black Hawk County, IA
Waterloo Christian School
Christian school (nondenominational) · Grades Pre-K–12
Growing: enrollment up 120% since 2011–12
Waterloo, IA
B-Overall grade312 students15 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.