This is the 4681st most frequent Russian word.
дошкольным
"Дошкольным" means "preschool" in English, relating to the period before formal schooling.
The word 'дошкольное' is used as an adjective describing the type of institution, namely one related to 'preschool'.
Этот ребёнок посещает дошкольное учреждение.
This child attends a preschool institution.
The word 'дошкольному' is used in its dative case as an adjective modifying 'education', indicating the preparation is oriented towards preschool learning.
Ребёнка готовят к дошкольному обучению.
The child is being prepared for preschool education.
The word 'дошкольных' is in its genitive plural form and modifies 'institutions', referring to the type of institutions present in the area.