Newsweek has ranked four Katy ISD high schools — Seven Lakes, Katy, Taylor and Cinco Ranch — among the top 1,500 (6 percent) out of the approximately 27,000 public high schools in the nation.

The magazine ranks public high schools annually based on the number of students who take Advanced Placement, International Baccalaureate or Cambridge tests at a school, divided by the number of graduating seniors.

Seven Lakes, ranked 403, topped the list in Katy. Other Katy ISD schools that ranked in the top 1,500 are Cinco Ranch at 458, Taylor at 1,067 and Katy at 1458.

All of the schools on the list have an index of at least 1.000 (meaning that they had as many tests as graduates), according to Newsweek researchers.

A school can reach 1.000 level only if half of its students take one AP, IB or Cambridge test in their junior year and one in their senior year.

Here’s more on how the rankings were calculated, which also takes into account the number of students eating federally subsidized lunches among other factors.