As mentioned above, each taekwondo club and school is different therefore there is no single way to teach taekwondo.
However, there are a few basic training techniques that can help students achieve certain skills in taekwondo. Forms are usually practiced through repetition.
Learning one half of the form and then moving on to the next half is the technique that is most often used. Then of course, even after students complete the form, it is necessary to critique them on the specifics.
Students should master all of the stances in the current form before moving on to the next form. Chambering should be emphasized and it is helpful to explain why chambering is necessary and how each initial position helps execute force. For kicking, teaching snapping is extremely important for learning how to do proper kicks.
Students typically line up against a wall or something they can place their hand on for balance, lift their knee up, and repeatedly practicing bending the leg in and snapping it out. This helps students gain the necessary muscles to have stronger, clean, and more accurate kicks. This general strategy can also be used for different kicks.
Students can lean against the wall, lift their legs up close to their belly button and repeatedly shoot their leg out to practice side kick or they can shift the angle of their hips downwards and repeat the same thing to practice back kick. This type of practice is about building the muscle and carefully practicing the proper technique.
By using targets, students can practice the accuracy of their kicks as well as transitioning from one kick to the other.
You can either do target training to practice one kick over and over and carefully critique it so to get the proper technique or you can do a combination of kicks to improve balance and transitioning. It is also important to practice agility and endurance.