Greenbriar Elem School vs Westmoor Elem School

Greenbriar Elem School and Westmoor Elem School sit 0.5 miles apart in Northbrook, Illinois, yet their state standings diverge sharply. Greenbriar ranks #15 of 3,813 Illinois schools — a result that would be the headline at virtually any other district. Westmoor ranks #3 of 3,813, placing it among the three highest-rated elementary schools in the entire state. The overall rating gap is 0.2 points (Westmoor at 9.9/10 versus Greenbriar at 9.7/10), a narrow margin in absolute terms that nonetheless reflects a meaningful positional difference at this level of competition.

On academics, both schools are elite: Greenbriar Elem School holds a 9.9/10 academic score while Westmoor Elem School reaches a perfect 10.0/10. The growth score tells a clearer story — Westmoor Elem School scores 9.9/10 against Greenbriar Elem School's 9.4/10, a 0.5-point gap indicating Westmoor is measurably more effective at accelerating student progress relative to starting points, not just serving a high-performing incoming population.

Both schools are similarly sized, but Greenbriar Elem School enrolls 367 students versus Westmoor Elem School's 352. Westmoor also carries a slightly lower student-teacher ratio — 9.8:1 compared to Greenbriar's 10.2:1 — meaning Westmoor averages roughly one fewer student per teacher. At this scale, that difference is modest but consistent with Westmoor's edge in growth outcomes, where instructional attention per student can compound over a full elementary arc.

The most concrete structural distinction is grade configuration. Greenbriar Elem School serves kindergarten through fifth grade, while Westmoor Elem School adds a pre-kindergarten program, giving families with younger children the option to enter the same school environment before the traditional KG start. Both schools cap at fifth grade, making the pre-K availability at Westmoor the primary programmatic differentiator for families making early enrollment decisions.