Ojamajo Doremi

Doremi Harukaze, a third grade elementary school girl living in the fictional Japanese town of Misora, comes across the MAHODO, a magic shop, and accidentally discovers that its owner, Majo Rika, is a witch. Due to a curse placed on any witch whose identity is exposed by a human, Majo Rika is transformed into a witch frog. Wanting to return to her original form, Majo Rika makes Doremi her witch apprentice, giving her the ability to cast magic. In order to become a fully-fledged witch capable of turning Majo Rika back into a human, Doremi has to pass nine different witch tests, while also keeping her identity a secret from other humans. Doremi is soon joined by her two best friends, Hazuki Fujiwara and Aiko Seno, and later by her younger sister Pop Harukaze who all become witch apprentices, helping to run the Maho-Do whilst using magic to help out their friends and families. At the start of the fourth grade, Doremi and the others, who sneak into the Witch World to visit Majo Rika, witness the birth of a magical baby, who is given the name Hana and will be the candidate for the next queen. As witch law dictates that whoever witnesses a magical baby's birth must take care of it for a year, Doremi and the others are once again made witch apprentices, tasked with raising Hana. While also taking care of the Maho-Do, which has now become a gardening store, the girls must ensure Hana's growth and help her pass several health examinations held by the Witch World's head nurse, Majo Heart. As the Queen of the Witch World pleads to the other witch senates to make Doremi and the others witches again, half of the senates are opposed to the decision. Thus, the Queen offers a compromise in that the girls, who are made into apprentices again, must pass six patissière exams in order to become full witches. With the Maho-Do remodeled into a bakery, Doremi and the others are joined by Momoko Asuka, a returnee from America who initially has little experience with Japanese outside of using a special intercom, to help them bake sweets needed for their exams. Hana, who has gotten bored of the Witch World and wants to be with Doremi and the others, uses all of her magic to instantly grow up and become a sixth grader. This results in the Maho-Do being transformed into a crafts shop and Hana's magical crystals shattering, requiring Doremi and the others to supply her with the energy needed to become a witch apprentice. (Source: Wikipedia)