▁their ▁parents ▁return ▁from ▁work . ▁Most ▁Bulgar ian ▁kind er gart ens ▁are ▁public . ▁ ▁Since ▁ 2 0 1 2 , ▁two ▁years ▁of ▁pre - school ▁education ▁are ▁comp uls ory . ▁These ▁two ▁years ▁of ▁mand atory ▁pre - school ▁education ▁may ▁be ▁attended ▁either ▁at ▁kind erg arten ▁or ▁in ▁prepar atory ▁groups ▁at ▁primary ▁schools . ▁ ▁Canada ▁ ▁School s ▁outside ▁of ▁Ontario ▁and ▁the ▁North west ▁Territ ories ▁generally ▁provide ▁one ▁year ▁of ▁kind erg arten , ▁except ▁some ▁private ▁schools ▁offer ▁junior ▁kind erg arten ▁for ▁ 4 - year - olds ▁( school ▁before ▁kind erg arten ▁is ▁most ▁commonly ▁referred ▁to ▁as ▁pre - school ). ▁Kinder g arten ▁is ▁mand atory ▁in ▁British ▁Columbia , ▁New ▁Brun sw ick , ▁and ▁Prince ▁Edward ▁Island , ▁and ▁is ▁optional ▁elsewhere . ▁The ▁province ▁of ▁Nova ▁Scot ia ▁refers ▁to ▁Kinder g arten ▁as ▁Gra de ▁Primary . ▁After ▁kind erg arten , ▁the ▁child ▁begins ▁grade ▁one . ▁ ▁The ▁province ▁of ▁Ontario ▁and ▁the ▁North west ▁Territ ories ▁provide ▁two ▁years ▁of ▁kind erg arten . ▁Within ▁the ▁province ▁of ▁Quebec , ▁junior ▁kind erg arten ▁is ▁called ▁pr ém atern elle ▁( which ▁is ▁not ▁mand atory ), ▁is ▁attended ▁by ▁ 4 - year - olds , ▁and ▁senior ▁kind erg arten ▁is ▁called ▁mat ern elle , ▁which ▁is ▁also ▁not ▁mand atory ▁by ▁the ▁age ▁of ▁ 5 , ▁this ▁class ▁is ▁integrated ▁into ▁primary ▁schools