Helen M. King Middle School is an expeditionary learning public middle school located in Portland, Maine and administered by the Portland Public Schools. The school's current principal is Amy Marx.
Serving 434 students in grades 6-8, King Middle School ranks in the bottom 50% of all schools in Maine for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 26% (which is lower than the Maine state average of 49%). The percentage of students achieving proficiency in reading/language arts is 77% (which is lower than the Maine state average of 84%).
The student-teacher ratio of 10:1 is lower than the Maine state level of 11:1.
Minority enrollment is 60% of the student body (majority Black), which is higher than the Maine state average of 15% (majority Black and Hispanic).
Quick Facts (2026-27)
- Grades: 6-8
- Enrollment: 434 students
- Student-Teacher Ratio: 10:1
- Minority Enrollment: 60%
- Overall Testing Rank: Bottom 50% in ME
- Math Proficiency: 26% (Btm 50%)
- Reading Proficiency: 77% (Btm 50%)
- Science Proficiency: 35-39% (Top 50%)
- Attendance Zone: King Middle School's attendance zone encompasses the entire school district in Portland, ME, covering an area of approximately 20.8 square miles, with a typical drive time of 5 to 10 minutes and an average distance of 3.2 miles from the school to the edge of the zone, reaching up to 9.9 miles at its furthest point.
- Source: National Center for Education Statistics (NCES), ME Dept. of Education
School Overview
King Middle School's student population of 434 students has declined by 9% over five school years.
The teacher population of 45 teachers has declined by 11% over five school years.
Grades Offered
Grades 6-8
(No virtual instruction)
(No virtual instruction)
Total Students
434 students
Total Classroom Teachers
45 teachers
Year Founded
1992
School Calendar
School Rankings
King Middle School ranks within the bottom 50% of all 500 schools in Maine (based off of combined math and reading proficiency testing data).
The diversity score of King Middle School is 0.68, which is more than the diversity score at state average of 0.28. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#464 out of 500 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
26%
49%
Reading/Language Arts Test Scores (% Proficient)
77%
84%
Science Test Scores (% Proficient)
35-39%
37%
Student-Teacher Ratio
10:1
11:1
Asian
3%
1%
Hispanic
14%
4%
Black
38%
5%
White
40%
85%
Two or more races
5%
4%
All Ethnic Groups
Chronically Absent Students
(22-23)30%
28.5%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
47%
39%
Eligible for Reduced Lunch
24%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ME Dept. of Education
Frequently Asked Questions
What is King Middle School's ranking?
King Middle School is ranked #464 out of 500 schools, which ranks it among the bottom 50% of public schools in Maine.
What schools are King Middle School often compared to?
King Middle Schoolis often viewed alongside schools like Lincoln Middle School, Lyman Moore Middle School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
26% of students have achieved math proficiency (compared to the 49% ME state average), while 77% of students have achieved reading proficiency (compared to the 84% ME state average).
How many students attend King Middle School?
434 students attend King Middle School.
What is the racial composition of the student body?
40% of King Middle School students are White, 38% of students are Black, 14% of students are Hispanic, 5% of students are Two or more races, and 3% of students are Asian.
What is the student-teacher ratio of King Middle School?
King Middle School has a student ration of 10:1, which is lower than the Maine state average of 11:1.
What grades does King Middle School offer ?
King Middle School offers enrollment in grades 6-8 (No virtual instruction).
What school district is King Middle School part of?
King Middle School is part of Portland School District.
In what neighborhood is King Middle School located?
King Middle School is located in the Valley Street neighborhood of Portland, ME.
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