Middlesex School admissions require the SSAT or the ISEE, student essay questions and a parent statement, with January 15 as the deadline. The school superscores the SSAT, which changes how you plan a retake. I've seen families avoid a second sitting because they feared a lower score would count.
Middlesex School Admissions at a Glance
- Test: required. The SSAT (code 5068) or ISEE (code 220-650) for 9th and 10th grade.
- Superscoring: Middlesex considers the highest section scores across all SSAT tests.
- Application deadline: January 15. March 10 decisions promised for completed applications by February 1.
- Written work: student essay questions and a parent statement.
- Application fee: $80. Financial aid deadline: January 15.
- Interview: not required, but tours and interviews are offered.
Middlesex School Admissions Steps
Middlesex describes its selection process as holistic. It looks for evidence of character, curiosity, academic achievement and interests within the context of a student's environment and life experiences.
- Submit an inquiry, and the school emails you instructions for the Admissions Portal.
- Apply through Gateway to Prep Schools or the Standard Application Online. Use only one.
- Send test scores directly from the testing service.
- Submit the student essay questions and the parent statement.
- Request recommendations and the transcript.
The application fee is $80, and you can request a waiver by email.
The Middlesex SSAT Superscore
Standardized testing is required for all applicants, and it must reach Middlesex directly from the testing service. For 9th and 10th grade, the school accepts the SSAT or the ISEE. For 11th grade it accepts the SSAT, PSAT or SAT.
Middlesex superscores the SSAT. It takes the highest section scores across all the tests a student has taken, which makes a retake a lower-risk choice.
In my experience, students either avoid retaking or retake with no plan. A retake works when you know which section moved the least and spend the weeks in between on that one.
A superscore rewards fixing the weakest section, and the weakest section is hard to find without timed practice scored section by section. Start the STEM Critical Thinking plan for timed test simulations with progress tracking.
The Student Essay Questions and Parent Statement
The application includes student essay questions and a parent statement. The public page does not print the questions, so you see them in Gateway or the SAO.
The weak essay answers the question in general terms and could belong to any applicant. The stronger essay uses one specific story that only this student could tell.
Students often write the first paragraph last, once they know what the essay is about. A reader who knows the student will rarely say what is missing.
Recommendations, Interviews and Deadlines at Middlesex
The checklist includes a current English teacher recommendation, a current math teacher recommendation and a principal or counselor recommendation. The school accepts transcripts and recommendations as PDFs by email if they do not come through Gateway or the SAO.
An interview is not required, though tours and virtual interviews are available. The application deadline for all applicants is January 15, and the financial aid deadline is the same day.
Middlesex promises March 10 decisions to every student whose application is complete by February 1.
Middlesex Decisions and Next Steps
The decision arrives through the Veracross portal on March 10, 2027.
I've worked with students who left the test until January and had no room for a second sitting. Since Middlesex superscores, a fall test and a winter retake is a sound plan.
Middlesex School Admissions FAQ
Q: What does superscoring mean at Middlesex?
A: Middlesex considers the highest section scores across all the SSAT tests a student takes. A second sitting can therefore lift one weak section without lowering the strong ones. The ISEE is also accepted for 9th and 10th grade.
Q: What are the Middlesex test codes?
A: The SSAT code is 5068, the ISEE code is 220-650 and the TOEFL code is 8720. Scores must be sent directly by the testing service, and Middlesex accepts only scores submitted electronically by the test center.
Q: Is an interview required?
A: No. The school says an interview is not required, but it would be pleased to host families for a tour and interview. Virtual interviews are also available, and you schedule them in the Middlesex Admissions Portal.
Q: When must everything be complete?
A: The deadline for all applicants is January 15. Middlesex prefers your portion by then, but it promises March 10 decisions to all students who have completed their applications by February 1.
Q: Which recommendations are needed?
A: A current English teacher, a current math teacher and a principal or counselor recommendation. Transcripts and recommendations not sent through Gateway or the SAO can be emailed as PDFs to admissions@mxschool.edu.
Q: What is the application fee?
A: The non-refundable fee is $80 for all domestic and international applicants. Fee waiver requests can be sent to admissions@mxschool.edu. The financial aid application deadline is also January 15.
Q: How do families get the decision?
A: Applicants receive their decision through the Veracross portal on March 10. Which application platform you use does not matter to the school, but materials must come through only one.
Scored Practice for the Middlesex Test and Essays
Middlesex reads superscored SSAT results and student essays. Use STEM Critical Thinking Practice Tests for timed test simulations with progress tracking and Essay Writing Practice Tests for practice essay prompts with detailed grading and feedback. The combo plan covers both, or compare all plans and pricing first.
