Frequently Asked Questions

The ECPI is a proprietary score we developed to measure a high school's performance based on tangible, outcome-based metrics. It primarily evaluates a school's success in preparing students for and placing them into higher education institutions. It is a composite score derived from several key indicators like matriculation rates to top universities and college readiness scores.

Our scoring model is more scientific and rigorous than those based on general surveys. We focus on objective, outcome-based measurements rather than subjective opinions. Behind our model are data scientists with backgrounds in Statistics and Psychometrics who have developed a system that measures what schools actually achieve for their students. By using psychometric scaling, we ensure that all components of our index are weighted fairly, providing a balanced and accurate reflection of a school's performance in preparing students for the future.

While those factors are incredibly important for a student's experience, they are also highly subjective and difficult to quantify objectively. Our mission is to provide a ranking based exclusively on measurable, outcome-based data. We believe this provides a clear and unbiased benchmark for academic performance, which parents can then use as a starting point alongside their own research into culture, arts, and athletics.

Yes. Our website’s modeling is the result of a completely independent study. Our rankings and analysis are not affected or influenced by any individual school, school district, or commercial entity. Our commitment is to providing objective, unbiased information to our viewers.

We integrate data from multiple public sources. This includes publicly available matriculation lists on high school and district websites, data from state Departments of Education, and information from university systems' public data portals (like the UC Information Center). We also use third-party data aggregators, national accreditation bodies like the National Association of Independent Schools, regional accrediting associations like the Northwest Association of Independent Schools, and the National Center for Education Statistics (NCES) for cross-referencing. By combining these sources, we create a more complete picture than any single source can provide.

Our rankings are updated on a rolling, periodic basis throughout the year. While our primary data collection process begins each fall after universities have finalized their enrollment data for the new academic year (ensuring our ECPI scores reflect the most recent graduating class), the data we receive from various sources comes in at different frequencies. Therefore, our rankings and index are updated periodically and differently depending on the area, state, and whether the school is private or public. Additionally, we are continuously expanding our coverage to new metro areas.

No, ECPI scores are not designed for cross-region or cross-category comparisons. Each ranking is scaled relative to the other schools *within that specific list* (e.g., "Bay Area Public Schools"). This ensures a fair, apples-to-apples comparison based on local context and competition. A score of 95 in one list is not directly comparable to a 95 in another.

There are a few reasons why a school might not be included in our index:

• Data Availability: We may not have enough reliable data for a particular school to accurately calculate its ECPI score.
• Specialized Focus: Some schools have a specialized focus (e.g., arts or vocational training) that doesn't align with the college placement metrics our index is based on.
• Scope: Our focus is primarily on traditional high schools. Schools that do not primarily serve high school students may not be included.

Our methodology focuses on domestic placements for several key reasons:

• Index Integrity: The ECPI is calibrated against a specific list of U.S. institutions (Top 25 National Universities and Top 15 Liberal Arts Colleges). Including international universities would require redefining our elite benchmarks.
• Standardization: Matriculation reporting standards vary significantly globally. We prioritize the ability to verify data across the 30 U.S. metros we cover to ensure an "apples-to-apples" comparison.
• Core Mission: Our current goal is to analyze the performance gap between private, charter, and magnet schools within the U.S. education landscape.

Our ability to add new metro areas is entirely dependent on the availability and reliability of public data for that region. Calculating an accurate ECPI score requires consistent, verifiable data on college matriculation and readiness. We are continuously working to expand our coverage as more reliable data sources become available.

• Targeted Pathway Planning: ECPI helps students identify high schools with a proven track record of sending graduates to top-tier universities, which often have the strongest research programs and industry connections.
• Outcome-Based Decision Making: Rather than relying on reputational rankings, students can use ECPI to see the actual "matriculation" rates—where students actually attend, not just get accepted.
• Navigating Competitive Landscapes: It helps students in 30 major U.S. metropolitan areas evaluate the intensity of local competition for elite spots.

• Evaluating Investment: Parents can use the data to assess if a private school or specific public school's high tuition or location (e.g., in a high-mortgage, top-tier school district) actually yields a higher probability of elite college admission.
• Quantifying the "Squeezed Middle": The index identifies a growing gap between elite private schools and traditional public schools, helping parents make informed decisions about school choice.
• Verifiable Data over Marketing: It provides objective, data-driven insights rather than subjective reviews.

• Measuring Educational Inequality: Researchers use ECPI to analyze the "entrenched dominance" of private schools in coastal cities versus the rise of charter schools elsewhere.
• Evaluating "School-Choice" Reforms: The index serves as a tool for policymakers to measure the real-world impact of educational policies on student outcomes.
• Mapping Elite Talent Pipelines: For universities and researchers, it helps track how specific high school environments feed the top-tier institutions that lead in innovation (e.g., MIT, Stanford, UC Berkeley).

• Civic and Community-led Journalism: Local outlet the Coconut Grove Spotlight use our school-specific matriculation data for Ransom Everglades to report on highly competitive squeezes at elite private schools and their impact on the local community.
• Investigative Journalism: National outlet The Free Press (CBS News) cite our Bay Area Private High School Index to establish that more than a third of San Francisco University High School (UHS) graduates matriculate to elite universities in investigative pieces Why Jewish Families Fled This Elite Prep School.
• Flagship Media: Major publication the Deseret News cite our national demographic reports on Asian enrollment trends to provide factual, data-driven context in opinion pieces and analytical articles, such as their coverage on the folly of out-of-context political posts and Right to the Point newsletters.
• Student Journalism: Award-winning student publication Walter Payton College Prep's The Paw Print use our Index as a citation source to contextualize shifts in state rankings and elite college placement outcomes in their editorial opinions.

• Admissions Strategy & Education: Online test prep and college admissions counseling platform SupertutorTV showcase our data to help students understand the landscape. Founder Brooke Hanson uses our interactive tools in video breakdowns to outline our methodology and explain how a student's high school environment impacts their chances of admission to Top 25 universities and highly selective state schools.

AI models sometimes cannot read the dynamically rendered data tables on our site due to JavaScript limitations. When they can't access the live table, they may "hallucinate" or estimate scores based on outdated training data. For more details on how different models behave, visit our Navigating Chicardgo Data with AI page.

The most reliable method is to always verify the data directly on Chicardgo.com. If you use AI tools for analysis, we recommend copying and pasting the specific data rows from our website directly into your prompt rather than asking the AI to fetch the URL itself. Read our full best practices on our AI User Guide.