Curriculum options/resources books that we know about (reviews to come later):

Little Pagan Acorns - lap books, unit studies, printables, and more. Mostly free.

Pooka Pages - a long running e-zine published for each Sabbat, with learning, activities, and more.

First Little Workbook of Wicca - a great preschool/early elementary workbook for letters and more. Possibly out of print.

A Witches' Primer: Grades 1, 2 and 3 - originally intended to be a text for a Pagan religion class for private schools.

Mother Phoenix Preschool - Pagan-created preschool curriculum.

Pagan Homeschoolers - an Online site with a number of courses, and more in development.

Aether Patches - not exactly a curriculum, but a series of learning opportunities.

MLD & Me - an Etsy store with Pagan themed printables.

Pestles and Potions - a Pagan curriculum (deities, magic, moon phases, astrology, and more). They have a Facebook group for people using the curriculum, and their Etsy store has other related materials.

Build Your Education - A Charlotte Mason based curriculum with Pagan units.

Full Circle Homeschool - A curriculum in development plus posts about resources.

Equinox Learning Hub - A project-based curriculum with related activities, social groups, and parent support.

Mountains, Meadows, and Moonbeams: A Child's Spiritual Reader - a book with simple spiritual explanations for kids.

Let them Bloom - seasonal unit studies.

Rune and Roots Collective - a Pagan homeschool co-op

Little Roots Herbal School - herbalism mixed with botany for kids

Celestial Classroom - art history

Skool for Little Witches - plants, apothecary, and more

Grey School of Wizardry - magic school with a program for ages 11-17

Astral Lara - children's psychic development

Medicinal Plants - secular herbalism

Asteria Moonbeams - unit studies

Melancholy Grammar