ad-hyah-pi-kah
Here's a breakdown:
* ad: pronounced like the "a" in "father"
* hyah: pronounced like the "hya" in "hyena"
* pi: pronounced like the "pi" in "pie"
* kah: pronounced like the "ka" in "karma"
The stress falls on the first syllable, ad.
Therefore, the correct pronunciation of adhyāpikā is "ad-hyah-pi-kah".