weight training for Jr. High

With technique being the most important factor as everyone has already stated, let me add one more suggestion to you. When training young athletes, stress how important training the posterior chain is in relation to athletics. Almost all young athletes, unless properly advised will only want to train what they "can see in the mirror", while neglecting more important areas such as hamstrings, glutes, etc. Begin teaching them how "sit back" in their squats (regardless of whether any weight is being used). Also, show them how compound lifts will produce "big arms" rather than leaving them to think that 3 or 4 variations of arm curls are required each workout.

Another important and often overlooked aspect is increasing CNS efficiency. Have your Young Guns begin incorporating bodyweight GPP (jumping jacks, mountain climbers, etc.) and things like light med ball throws. This will increase their work capacity and later in their athletic careers will enable to become stronger than if their CNS was less efficient.

The offseason is approaching, best of luck to all of you.