/// <summary>
/// Enum for easy indexing and checking if a course is of a certain kind
/// </summary>
public enum ThemeIndex
{
    ALPHABET,
    CLOTHING,
    ANIMALS,
    FOOD,
    HOBBIES,
    HOUSE,
    FAMILY,
    SPELLINGGEOGRAPY,
    SPELLINGBUILDINGS,
    SPELLINGSPORTS,
    SPELLINGBASICS,
    SPELLINGHOBBIES,
    SPELLINGPEOPLE,
    SPELLINGFRUIT,
    SPELLINGVEGGIES,
    SPELLINGWILD,
    SPELLINGFARM
}