Given a sentence in Spanish, provide an equivalent paraphrased translation in English that retains the same meaning both through the translation and the paraphrase.

Example input: La temporada de la NBA de 1975: 76 fue la 30ª temporada de la National Basketball Association.
Example output: The 1975 -- 76 season of the National Basketball Association was the 30th season of the NBA .
Example explanation: This is a correct and accurate translation from Spanish to English because the translated paraphrase retains the main message that between the years 1975-1976, the 30th NBA season occurred.
Q: La antigua escuela secundaria se convirtió en la Escuela Superior, mientras que el nuevo edificio se convirtió en la escuela secundaria.
A:
The old grammar school became the Upper School while the new building became the Lower School .