decathlon

From the United States Conference of Catholic Bishops (USCCB)
 
The Catholic Church runs the largest network of private schools in the United States. Total Catholic elementary/middle and high school enrollment for the 2016-2017 academic year is 1,878,824.
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• Elementary/middle schools: 5,224 schools educating 1,309,429 students.
• High schools: 1,205 schools educating 569,395 students.
• 6,429 total Catholic (elementary/middle and high) schools in the United States.
• 1,739 Catholic schools had waiting lists for admission.  
• Non-Catholic enrollment was 345,327 or 18.4% of the total enrollment.
• 30% of all Catholic high schools are single gender and 1.4% of all Catholic elementary schools are single gender.
• 99.3% of Catholic secondary school students graduate and 85.2% go on to four-year colleges, compared to 44% of public school graduates who go on to a four-year college.  
• Dioceses with the largest enrollments are Chicago, Los Angeles, New York, Philadelphia, Cleveland, Cincinnati, Brooklyn, St. Louis, Boston, and New Orleans.
• 20 new Catholic schools opened, and 96 schools closed or consolidated.

https://www.usccb.org/offices/public-affairs/catholic-education