Serious incidents run well above the district average, and this school reports across every data category — a strong sign the numbers reflect reality.
| CATEGORY | COUNT | TIER |
|---|---|---|
| Firearm or explosive possession | 0 | Serious |
| Homicide | 0 | Serious |
| Physical attack with weapon | 2 | Serious |
| Rape / sexual assault | 0 | Serious |
| Referral to law enforcement | 5 | Serious |
| Robbery with weapon | 0 | Serious |
| School-related arrest | 5 | Serious |
| Threat of attack with weapon | 0 | Serious |
| Harassment on basis of race/sex/disab. | 0 | Moderate |
| Physical attack without weapon | 143 | Moderate |
| Robbery without weapon | 0 | Moderate |
| Sexual harassment | 0 | Moderate |
| Threat of attack without weapon | 0 | Moderate |
| Bullying / harassment (general) | 0 | Minor |
Chaffey High ranks #10 of 10 scoreable schools in this district.
| SCHOOL | GRADES | SCORE | GRADE |
|---|---|---|---|
| Montclair High | 09–12 | 75 | A |
| Chaffey District Online High | 09–12 | 74 | A |
| Valley View High (Continuation) | 09–12 | 68 | A |
| Rancho Cucamonga High | 09–12 | 62 | A |
| Los Osos High | 09–12 | 62 | A |
| Etiwanda High | 09–12 | 59 | A |
| Colony High | 09–12 | 57 | A |
| Alta Loma High | 09–12 | 47 | A |