The instructor always trains with his students rather than just stand by and give instructions, he prefers to join in and give his knowledge first hand, even to the new starters (middle picture). The higher graders also help with the younger students (third picture).
Here are a couple of higher graders sparring, Lee Knight (the person without the shirt) has a recently achieved his black belt.
Then we move onto the fighting which is every lesson and even the new starters get a chance to fight even on their first lesson. All fighting is very controlled so even the very young and new starters cannot get hurt.
Here are some of the older fighters which range from around 16 to around 40 years of age.
Here is our instructor Adam Laurence as mentioned before he prefers to get fully involved with the classes and takes his turn fighting with all of his students. On the forth picture you can see one of his students has tried to sweep him but unfortunately failed.
(Click on the image to see the enlargement)