Yes, you can add more subjects to your account at any time! IXL offers a variety of membership options: single subject (math, language arts, or Spanish), a combo package (math and language arts), or all four core subjects (math, language arts, science, and social studies). You can also add Spanish to any package! Changing membership options may change the cost of your membership; the price is prorated if you make adjustments in the middle of a billing cycle.
To update your plan, sign in to your IXL parent account, and open the account menu. Select Membership details. In the Membership information section next to your current subject(s), click change. Follow the prompts to confirm your plan update.