D.C. Metro Private High School Elite College Placement Index

Primary Data Sources

• Official School Profiles & Matriculation Lists: The most reliable and detailed data comes directly from the schools themselves. Many of the schools in this analysis publish annual school profiles or multi-year matriculation lists that provide specific college enrollment data for their graduating classes.
• School Websites and Publications: Additional context and data points are gathered from school websites, official news articles, and alumni magazines which often highlight notable college placements.

Secondary & Supporting Sources

• Third-Party Data Aggregators: Platforms compiling data from various sources are used for cross-referencing and modeling for schools that do not publish comprehensive, public lists.

Important Disclaimer

ECPI Score Components & Weighting

The total ECPI score is a weighted average of five components, each scaled to a 0-100 score to ensure comparability. This model is designed to reflect the unique post-secondary pathways of the D.C. metropolitan area.

• T25 National University (35%): Measures matriculation to Top 25 National Universities, rewarding placement at the nation's most selective research universities.
• T15 Liberal Arts College (15%): Recognizes placement at elite small colleges, a significant alternative pathway for top students.
• In-State/Regional Flagship Pipeline (20%): Measures the strength of a school's pipeline to its primary state or regional flagship public universities (e.g., University of Virginia, University of Maryland).
• HBCU Matriculation Strength (10%): Measures matriculation to leading Historically Black Colleges and Universities.
• College Readiness Score (20%): An internal score reflecting a school's academic rigor, resources, faculty qualifications, and overall national reputation.

Psychometric & Mean Scaling

A simple weighted average can be misleading. To solve this, we use a two-step scaling process:

1. Normalization (0-100 Scale): For each of the five components, we analyze the range of scores across all schools in our database. Each school's raw score is then scaled to a value between 0 and 100. This converts raw data into a standardized measure of performance relative to peers.
2. Mean Adjustment (Target Mean of 70): After calculating an initial ECPI score based on the weighted average of the scaled components, we apply a linear adjustment to every school's score to shift the overall average to a target of 70. This makes 70 the benchmark for a "strong" performance within the D.C. Metro context.