Amado T. Reyes Elementary School is the smallest school in the City of Mandaluyong with a Teacher-In-charge as its head. It is located at Sheridan Street, Brgy. Buayang Bato, with a total lot area of 330.76 square meters. The school started with a two-storey academic building with a total floor area of 290 square meters. The first floor housed the Grades I and 2, canteen and comfort rooms for boys and girls, clinic and stock rooms while the Grades 3 and 4, Home Economics Room, and library occupied the 2nd floor. In 1995, an extension was built at the side adjacent to Pasig river due to the entrance of more pupils. It housed the library, clinic and stock rooms. Later on, another extension was made for a mini-computer lab and Principal’s office.

Amado T. Reyes Elementary School was established in 1986, through the initiative of the Barangay Captain Prudencio H. Nobela, whose concern was the continuous education of the poor residents of the barangay. He wrote a request in April 1986 for a school building to Hon. Benjamin S. Abalos Sr., who was then the municipal-in-charge. The request was granted and the school building was constructed for two (2 ) months so it could be used for the opening of classes for School Year 1986-1987. It was inaugurated on September 12, 1986 and was named after Amado T. Reyes, one of Mandaluyong’s mayors.

During the first school year, it catered to four grades level, Grades 1 to 4. Only one teacher was in charge with one grade level including the school’s teacher in-charge. The following year, another grade level was added and the first graduation was held on March, 1989 with 18 graduates. There were times that the school only had less than 10 graduates but as the years passed, the number of enrollees and graduates rose gradually.

In 1995, a strong typhoon struck the country which destroyed the extension that originally housed the school library, clinic, stock room, mini computer lab and principal's office. The area later became the school’s function hall.

Amado T. Reyes Elementary School has been in existence for 32 years now and through the years, it has spawned countless number of professionals whose success brings pride to the school through their productive involvement in the society. With the school's long years of public service being unselfishly catered to the learners, it is but fitting that a hymn shall be made in its honor to sing of its glory and achievement. On November 5, 2018, the ATRES Hymn was launched. It was written by one of its faculty members, Mr. Salvador E. Manansala I while its music was arranged by Mrs. Jean B. Castrence, a Public Schools District Supervisor. The making of the school hymn was initiated by Mr. Roderick R. Mendiola, the school head in May 2018 to November of the same year. On the day the ATRES Hymn was launched, the community also welcomed its newly appointed Teacher-in-Charge, Mr. Joseph V. Alegre.

At present, the school continues to be true to its mandates of cultivating learners to be equipped well-rounded abilities in order to contribute to our society in the future, serve others while not forgetting giving glory to the Lord above as what was written in the DepEd Core Values: Maka-Diyos, Maka-tao, Makakalikasan at Makabansa.