Miami Beach Nautilus Middle, 4301 N. Michigan Ave.: grades 6-8, 893 students (NCES 2024-25), an A in Florida's 2026 school grades. Zone, bell times.
Last checked Oct. 9, 2026. Sources: the Miami-Dade County Public Schools school directory, the Nautilus Middle website, the Florida Department of Education’s 2026 school grades file, the federal NCES school directory and Miami-Dade County’s middle school attendance boundaries.
Miami Beach Nautilus Middle School is the Miami-Dade County Public Schools middle school for the whole city. Every Miami Beach address point in the county’s attendance boundary map falls inside its zone. The school calls itself the “Home of the Sharks,” and the district lists its colors as royal blue and white.
Who to call
- Front office: 305-532-3481, 4301 N. Michigan Ave., Miami Beach, FL 33140
- School website: mbnautilussharks.org
- Enrolling: the school’s registration page; the district’s Student Registration office, 305-883-5323; magnet and choice questions go to School Choice and Parental Options, 305-995-1922
- School buses: the school’s transportation page, which says to request a bus through the parent portal, and the district’s transportation department, 305-234-3365
| Address | 4301 N. Michigan Ave., Miami Beach, FL 33140 |
| Phone | 305-532-3481 |
| Grades | 6 to 8 |
| Mascot | Sharks |
| District | Miami-Dade County Public Schools |
Principal
Principal Roberto Inza, according to the school’s faculty and staff page, which lists one assistant principal.
Enrollment
The federal NCES directory counted 893 students in the 2024-25 school year, with 35 full-time-equivalent classroom teachers, a ratio of 25.5 students per teacher. The district’s online directory currently lists 838 students against a capacity of 1,060, or 79% full; it does not give a date for that count.
State report card
Florida grades every public school A to F. The state says school grades “provide an easily understandable way to measure the performance of a school,” in its 2026 school grades overview. A middle school’s grade adds a middle school acceleration measure to test results and learning gains, as the grades file shows.
| School year | Grade |
|---|---|
| 2025-26 | A (65% of possible points) |
| 2024-25 | A |
| 2023-24 | B |
From the 2026 grades file, where achievement is the share of tested students at grade level or above:
- English language arts achievement: 69%
- Math achievement: 63%
- Science achievement: 69%
- Social studies achievement: 84%
- Middle school acceleration: 79%
The full report card is on the state’s Florida school report cards site.
Attendance zone
The district’s directory describes the zone as everything from Baker’s Haulover Inlet south to the southern end of Fisher Island, between the Atlantic Ocean and the Intracoastal Waterway. The directory dates the zone to the 1989-90 school year. Check any address with the district’s Find Your Neighborhood School lookup.
Nautilus sits in the Miami Beach Senior High feeder pattern, according to the district’s directory. The elementary and K-8 schools in that pattern are Biscayne Beach Elementary, Miami Beach Fienberg/Fisher K-8 Center, Miami Beach South Pointe Elementary, North Beach Elementary, Ruth K. Broad Bay Harbor K-8 Center and Treasure Island Elementary.
Students zoned for a K-8 center are not required to stay there for middle school. The district’s directory says parents who want a traditional middle school “will have the option of enrolling their child in the traditional middle school assigned to serve their neighborhood.”
Programs
The school’s academic programs page lists:
- International Baccalaureate Middle Years Programme, in which the school says all teachers have been trained
- Junior Scholars International, an advanced program for qualified students, gifted and non-gifted
- High school courses such as biology, algebra, geometry, Spanish, French and physical science, both virtual and in person
- STEAM competitions, including SECME Robotics and the Fairchild Challenge
The school’s Music Academy offers jazz band, concert band, performance band, orchestra, guitar and a piano lab, plus drama and dance. Sports listed by the school include cross country, swimming, softball, tennis, volleyball, soccer and basketball.
Calendar and bell times
The school day runs from 9:10 a.m. to 3:50 p.m. in four blocks, according to the school’s 2026-27 bell schedule, with three lunch periods inside the third block. Next breaks on the district’s 2026-27 calendar (PDF):
- Tuesday, Nov. 3: teacher planning day, no students
- Wednesday, Nov. 11: Veterans Day, schools closed
- Nov. 26-27: Thanksgiving holiday and recess day
- Friday, Dec. 18: teacher planning day, no students
- Dec. 21 to Jan. 1: winter recess
More on Miami Beach schools
- The district’s page for Nautilus Middle
- Every public school in Miami Beach
- Our Miami Beach schools guide for the full calendar, enrollment and magnet deadlines
Frequently asked questions
What grades does Nautilus Middle serve?
Grades 6 through 8. Miami Beach Nautilus Middle School is at 4301 N. Michigan Ave. in Miami Beach.
What is Nautilus Middle’s school grade?
It earned an A in Florida’s 2026 school grades for the 2025-26 school year, with 65% of possible points, after an A in 2025 and a B in 2024.
Which high school does Nautilus Middle feed into?
Miami Beach Senior High. The district’s directory places Nautilus in the Miami Beach Senior High feeder pattern.
What time does Nautilus Middle start?
Classes run from 9:10 a.m. to 3:50 p.m., according to the school’s 2026-27 bell schedule.
Have your say