Chaffey Joint Union High Elementary Schools

10 schools ranked by composite score — exceeded vs. met standard, growth, absenteeism, suspension, and baseline proficiency.

District performance overview

Chaffey Joint Union High has 10 ranked elementary schools averaging a composite score of 54.8 — 8.6 points above the state average of 46.2. Scores range from 24.2 to 68.4.

The highest-scoring school is Los Osos High with a composite of 68.4 and 39.5% exceeding standard.

Wide performance spread: The 44.3-point gap between the highest and lowest scoring schools in Chaffey Joint Union High suggests significant variation in school quality within the same district. Choosing the right school within this district matters more than choosing the district itself.

District-wide chronic absenteeism averages 34.7%, below the state average of 18.2%.

Avg Composite

54.8

State avg: 46.2

Score Range

44.3

24.2 – 68.4

Avg Exceeded %

24.9%

State avg: 21.6%

Schools Ranked

With composite scores

#	School	County	Score	Exceeded	Met+	Absent	Susp.
1	Los Osos High Chaffey Joint Union High	San Bernardino	68.4	39.5%	65.0%	25.0%	3.4%
2	Etiwanda High Chaffey Joint Union High	San Bernardino	64.0	35.4%	63.6%	22.4%	3.0%
3	Rancho Cucamonga High Chaffey Joint Union High	San Bernardino	62.6	33.2%	59.0%	27.5%	4.5%
4	Alta Loma High Chaffey Joint Union High	San Bernardino	58.4	23.0%	52.6%	29.3%	3.5%
5	Chaffey District Online High Chaffey Joint Union High	San Bernardino	57.6	42.6%	61.8%	16.7%	0.0%
6	Ontario High Chaffey Joint Union High	San Bernardino	55.3	19.6%	46.0%	32.5%	3.6%
7	Montclair High Chaffey Joint Union High	San Bernardino	53.6	21.9%	49.7%	34.4%	5.1%
8	Colony High Chaffey Joint Union High	San Bernardino	53.3	15.8%	37.3%	31.4%	4.9%
9	Chaffey High Chaffey Joint Union High	San Bernardino	50.9	16.7%	39.6%	38.2%	5.5%
10	Valley View High (Continuation) Chaffey Joint Union High	San Bernardino	24.2	1.3%	7.2%	90.0%	4.6%

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Chaffey Joint Union High Elementary Schools

District performance overview

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