Maple Hill Elementary School is a 2006 California Distinguished School serving about 540 students from kindergarten…More to fifth grade. The school is directly across the street from Maple Hill Park, near the center of Diamond Bar. It is a part of the Walnut Valley Unified School District.</p> <p>From 2009 to 2010, Maple Hill's Academic Performance Index score rose seven points from 902 to 909 (scored on a scale of 200-1000). Compared statewide, the school's 2010 API scores 9/10. Compared against a group of 100 similar schools, the score is 2/10.</p> <p>The school mascot is the hawk.</p>

Castle Rock Elementary is an International Baccalaureate Primary Years Programme school and a California…More Distinguished School serving 516 students from kindergarten through fifth grade. It is a part of Walnut Valley Unified School District and borders the 57 Freeway in south Diamond Bar. The school also shares a border with Heritage Park.</p> <p>The IB Primary Years Programme identifies a specific <a href="http://castlerock.wvusd.k12.ca.us/apps/pages/index.jsp?uREC_ID=61410&type=d&termREC_ID=&pREC_ID=94644">curriculum</a> to which the school adheres. From 2009 to 2010, Castle Rock's Academic Performance Index score rose 2 points from 923 to 925 (on a scale of 200 t0 1,000). Its mascot is the Knight.</p>