#52 Best Private High Schools in Virginia. Blue checkmark. Private School, RICHMOND, VA, 9-12. 53 Niche users give it an average review of 4.2 stars. Featured Review: Alum says Saint Gertrude is a special community that you can’t understand unless you are there. Aside from the top tier academics that prepare you greatly for college, the special traditions that no other… Read 53 reviews. Overall Niche Grade: A, Students: 173, Student-Teacher Ratio: 5 to 1,