Westlake Revelations readers responded en masse and quickly with a set of similar questions (both really good questions, btw):
1) How did xyz school rank?
2) What about private schools?

LVUSD High Schools (for comparison) were:

Agoura High School
Medal Awarded: Silver
National Rank #1022
State Rank #198

Calabasas High School
Medal Awarded: Silver
National Rank #654
State Rank #122

Here are the rankings of other public high schools that you asked about:

Westlake High School
Medal Awarded: Gold
National Rank #307
State Rank #59

Thousand Oaks High School
Medal Awarded: Silver
National Rank #828
State Rank #159

Newbury Park High School
Medal Awarded: Silver
National Rank #840
State Rank #163

Oak Park High School
Medal Awarded: Silver
National Rank #706
State Rank #130

Beverly Hills High School
Medal Awarded: None
National Rank: Unranked

Santa Monica High School
Medal Awarded: None
National Rank Unranked

Palos Verdes Peninsula High School
Medal Awarded: Gold
National Rank #137
State Rank #23

Palos Verdes High School
Medal Awarded: Gold
National Rank #266
State Rank #53

William Howard Taft Senior High
Medal Awarded: None
National Rank Unranked

Moorpark High
Medal Awarded: None
National Rank Unranked

Adolfo Camarillo High School
Medal Awarded: Silver
National Rank #1076
State Rank #215

El Camino Real Senior High
Medal Awarded: None
National Rank Unranked

Granada Hills Charter High
Medal Awarded: Silver
National Rank #728
State Rank #133
Charter Rank #69

Daniel Pearl Magnet High School
Medal Awarded: Silver
National Rank #746
State Rank #139

This ranking is ONLY for public schools. Private schools are not included.