Question: Walt Housman attended which public secondary school that holds 1400 students?
Context: Redland Green School (RGS) is a free Secondary School in Bristol, England, having facilities for 1400 students aged 11 to 16, 450 post-16 students, and dedicated facilities for 50 students with learning difficulties.  The school also features a full 11 a side style AstroTurf pitch and Apple iMac room.  The school is also joint with the North Bristol Post 16 Centre. Merrimack High School (MHS) is the public secondary school of the town of Merrimack, New Hampshire.  It is located in a central area of town on 38 McElwain Street.  About 1,400 students from grades 9 through 12 attend the school each year. Applewood Heights Secondary School (AHSS) is a public secondary school in Mississauga, Ontario, Canada and is part of the Peel District School Board.  The school serves around thirteen hundred students with over a hundred teachers and school staff.  Applewood is one of only 3 high schools in Mississauga that offers a French immersion program (also Streetsville Secondary School and Clarkson Secondary School).  Applewood also offers a Specialist High Skills Major in Sports, as well as a Regional Sports program.  The school commenced operations in 1966.  Several portable classrooms were added in the late 1980s and early 1990s to serve the (then) 1800+ students, but decreasing enrolment occurring around the turn of the millennium led to their removal.  According to the school website, as of September 2010 Applewood will change to a semester school leaving Meadowvale Secondary School as the last remaining non semester school in the Peel District School Board. Killara High School is a coeducational public secondary school, located on Koola Avenue in East Killara, Sydney.  Established in 1970, Killara High School is one of the highest performing comprehensive non-selective public schools in the state.  The success of the school in the Higher School Certificate (HSC) and its reputation as a school with an extensive program of curriculum enrichment make the school highly desirable.  Activities such as music, art, dance, drama, debating, sport and strong participation in the Duke of Edinburgh's Award Scheme are included in the co-curricular program.  Enrolment rose 21% from 2002 to a population of 1400 students in 2009.  It now has 1580 students (2016).  Currently, accepted catchment areas include Roseville, West Lindfield, Lindfield, East Lindfield, West Killara, Killara, East Killara, West Gordon and East Gordon. Enfield High School is a secondary school established in 1893 in Enfield, Connecticut.  The Enfield High School campus is located in the Connecticut River Valley, on Enfield Street (U.S. Route 5) in Enfield's Historical District.  The school has an enrollment of approximately 1400 students.  The present facility was built in 1964 on Enfield Street.  The facility underwent a $6.2 million renovation and library addition completed in 2005, and a $103 million "as-new" renovation and significant expansion completed in 2017.  In May 2010, Enfield High School and Enrico Fermi High School underwent a consolidation process as part of the restructuring and improvement plan of Enfield Public Schools.  Enfield High School operates as the town's sole high school, which houses both students from Enfield High School and the previous Enrico Fermi High School, which closed its doors in 2016. Mountain Secondary School was located at 60 Caledon Avenue Hamilton Ontario, and is a member of the Hamilton-Wentworth District School Board.  The school was founded in 1995 when the Caledon and Crestwood Vocational Schools merged and has a 2009-2010 student enrolment of 328.  The school's mission statement is "Every day, every lesson, every activity prepares our students for success in the workplace."  Mountain Secondary School uses the Ontario Secondary School Literacy Test (OSSLT) to assess Grade 10 students' skills in reading and writing.  Successful completion of the test is one of 32 requirements students need to attain in order to receive an Ontario Secondary School Diploma.  The school also offers special education classes as well as an ESL program.  Mountain Secondary School offers a Pathway program that enables students to focus their studies in specific career area.  The goal of the program is to assist students in finding employment, or gain experience in a specific field of interest that may be to their advantage moving forward.  The HWDSB announced on 24 May 2012 that Mountain Secondary School will close, along with Hill Park Secondary School and Barton Secondary School.  The students will be consolidated into a new, $25 million school., and on June 26th, 2017, the school closed down. Eastview Secondary School is a public secondary school (grades 9-12) located in northeastern Barrie, Ontario, Canada.  It currently has an enrollment of about 1400 students and its principal is Jane Seymour.  Its Vice Principals are Harry Stegenga, Marnie Ridout and Julie Richardson. Woodbridge College is a secondary school in Woodbridge, Ontario, Canada.  The school opened its doors in 1958 as Woodbridge High School, and remained a public secondary school until 1991, when it became an alternative school, changing its name to Woodbridge College, with students in grades 7-OAC.  In 2000, Woodbridge College’s alternative school status ended and it returned to being a public secondary school with grades 9 to 12.  The school's name as "Woodbridge College" remains unchanged to present day.  The school’s current enrollment is approximately 523 students.  In the school year of 2009-2010, Debra Conrad Knight was succeeded by Ann Pace as school principal.  During the 2015 to 2016 school year, Fraser Institute ranked the school at 279 out of 740 in Ontario. Ursuline College Chatham (AKA The Pines, UCC) is a Catholic secondary school in Chatham-Kent, Ontario, Canada.  It is one of two secondary schools in the St. Clair Catholic District School Board (the other being located in the city of Sarnia, Ontario), and is one of seven secondary schools located in the regional municipality of Chatham-Kent.  The school has more than 1400 students enrolled, making it the largest high school in Chatham-Kent. Walter Henry Housman III (born October 13, 1962) is a former American football offensive tackle who played one season with the New Orleans Saints of the National Football League (NFL).  Housman now serves as an assistant coach for the Baltimore Brigade of the Arena Football League (AFL).  He first enrolled at the University of Iowa before transferring to Upsala College.  He attended Merrimack High School in Merrimack, New Hampshire.  Housman was also a member of the New York Knights, Denver Dynamite and New Orleans Night of the Arena Football League (AFL).
Answer: Merrimack High School