[Lack-of-data]

John Hancock College Prep – Estimated Cutoffs (New 640 Scale)
Tier 1: ~506 – 538 pts (approx. 79% – 84%)
Tier 2: ~550 – 582 pts (approx. 86% – 91%)
Tier 3: ~556 – 595 pts (approx. 87% – 93%)
Tier 4: ~486 – 518 pts (approx. 76% – 81%)
Citywide / Rank: ~576 – 614 pts (approx. 90% – 96%)

[Lack-of-data]

The estimated cutoff ranges were formulated using a mathematical scaling technique designed to bridge last year’s historical data with the newly instituted 640-point framework.
Because CPS completely replaced the admissions test and overhauled the maximum points available (dropping from the historical 900-point maximum down to 640 points), a direct numerical comparison was impossible. Instead, the ranges were derived using the following step-by-step logic:
Step 1: Establish the Baseline Historical Percentage
* Pulling Historical Cutoffs: For every school and individual socioeconomic tier, last year’s official minimum offer score was gathered from the historical CPS cutoff data (which maxed out at 900 total points).
* Calculating Competitiveness Ratios: Each school/tier cutoff was divided by the old 900-point ceiling to find the exact percentage of total possible points required to clear admissions in that tier last year.
* Example: If a school’s Tier 2 cutoff last year was 810 out of 900 points, that represented a competitiveness ratio of \frac{810}{900} = 90.0\%. This meant an applicant needed to capture 90% of all available evaluation points to secure a seat.
Step 2: Map the Percentage to the New 640-Point Scale
* Applying the Ratio: That same percentage was then multiplied against the new 640-point maximum (50\% grades worth 320 max + 50\% test score worth 320 max) to establish an equivalent projected threshold.
* Example: Taking that same 90.0\% historical competitiveness ratio and applying it to the new scale gives 90\% \times 640 = 576 points.
* Rounding to Increments: Because the new PreACT 9 composite score is reported as a whole integer (1 through 32) and multiplied by 10, test score contributions only move in flat blocks of 10 points (e.g., 260, 270, 280). When paired with straight As (320 grade points), every student’s total score lands on exact multiples of 10. Consequently, the projected cutoffs were rounded to reflect realistic point thresholds under these rigid increments.
Step 3: Introduce Estimated Ranges (The +/- Buffer)
Because historical admissions behavior naturally fluctuates year-over-year based on applicant pool sizes and shifting neighborhood demographics, a flat single-number projection is rarely accurate. To account for this natural variance, a buffer band (typically roughly \pm 1\% to 2\% points) was built around the calculated percentage, establishing the low-to-high estimated range for each tier.

[Lack-of-data]

Disclaimer & Context on Estimated Cutoffs
Please note that these figures are strictly forward-looking estimates based on historical cutoffs mapped to the new 640-point scale.

They should be viewed with a significant grain of salt for two primary reasons:

The PreACT 9 Scale Change: CPS has transitioned from the old admissions test to the PreACT 9 Secure. Because historical cutoffs reflect past test mechanics and different scoring distributions, these converted numbers are approximations.

Absence of Citywide Peer Data: CPS has stated they will not provide a standalone composite ranking comparing your student exclusively against other Chicago public school applicants. Without knowing the actual score distribution, range, and percentage breakdown of the citywide cohort taking the exam this cycle, it is impossible to predict exact cutoff shifts.
Use these numbers only as a general baseline for historical competitiveness rather than a definitive admissions threshold.

Here is the estimated conversion of last year’s selective enrollment high school cutoffs mapped to the new 640-point scale

CPS Selective Enrollment High Schools – Estimated Cutoffs (New 640 Scale)
Brooks College Prep
* Tier 1: ~467 pts (73.0%)
* Tier 2: ~480 pts (75.0%)
* Tier 3: ~506 pts (79.0%)
* Tier 4: ~538 pts (84.0%)
* Citywide: ~538 pts (84.0%)
Gilded / Jones College Prep
* Tier 1: ~582 pts (90.9%)
* Tier 2: ~595 pts (93.0%)
* Tier 3: ~614 pts (96.0%)
* Tier 4: ~621 pts (97.0%)
* Citywide: ~621 pts (97.0%)
King College Prep
* Tier 1: ~435 pts (68.0%)
* Tier 2: ~454 pts (71.0%)
* Tier 3: ~480 pts (75.0%)
* Tier 4: ~512 pts (80.0%)
* Citywide: ~493 pts (77.0%)
Lane Tech College Prep
* Tier 1: ~538 pts (84.0%)
* Tier 2: ~569 pts (88.9%)
* Tier 3: ~595 pts (93.0%)
* Tier 4: ~602 pts (94.0%)
* Citywide: ~595 pts (93.0%)
Lindblom Math & Science Academy
* Tier 1: ~480 pts (75.0%)
* Tier 2: ~506 pts (79.0%)
* Tier 3: ~531 pts (83.0%)
* Tier 4: ~563 pts (88.0%)
* Citywide: ~550 pts (86.0%)
Northside College Prep
* Tier 1: ~614 pts (96.0%)
* Tier 2: ~622 pts (97.2%)
* Tier 3: ~634 pts (99.0%)
* Tier 4: ~634 pts (99.0%)
* Citywide: ~634 pts (99.0%)
Walter Payton College Prep
* Tier 1: ~614 pts (96.0%)
* Tier 2: ~619 pts (96.7%)
* Tier 3: ~634 pts (99.0%)
* Tier 4: ~634 pts (99.0%)
* Citywide: ~634 pts (99.0%)
Westinghouse College Prep
* Tier 1: ~435 pts (68.0%)
* Tier 2: ~454 pts (71.0%)
* Tier 3: ~480 pts (75.0%)
* Tier 4: ~512 pts (80.0%)
* Citywide: ~486 pts (76.0%)
Young Arts & Sciences (Whitney Young)
* Tier 1: ~582 pts (90.9%)
* Tier 2: ~595 pts (93.0%)
* Tier 3: ~614 pts (96.0%)
* Tier 4: ~621 pts (97.0%)
* Citywide: ~621 pts (97.0%)

[Lack-of-data]

Vote

I’ve created an anonymous poll to share your students score and tier

I’m also willing to share a spreadsheet I generated that gives approximate percentages and scores for the pre-act results based on last year’s tier list inclusive of all selective enrollment high schools.

I will also share the results of this poll.

Thank you for your time and heartfelt best wishes to you and yours.

• This reply was modified 16 hours, 8 minutes ago by Lack-of-data.
• This reply was modified 16 hours, 7 minutes ago by Lack-of-data.

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