The foundation phase
3.—(1) The foundation phase in relation to a pupil is the period beginning with the relevant time (as defined by paragraph (2)) and ending at the same time as the school year in which the majority of pupils in the pupil’s class attain the age of seven.
(2) In paragraph (1) “the relevant time” (“yr amser perthnasol”) means in the case of a child who is—
(a)provided with funded nursery education before that child attains the age of three, their third birthday;
(b)provided with funded nursery education after that child attains the age of three, the time when they are first provided with such education; and
(c)not provided with any funded nursery education, the time when that child first receives primary education other than nursery education.