I'm with Micro...
Unless you personally were told of the circumstances of the other situation...
You know your grades, and your capabilities. If you are doing well, keep up your same study habits, and you will continue to do well. If not, get with a study group, or increase the amount of time you study.
How many clinical days do you have left? Somehow, I think your clinical instructor has let you down. My LPN clinical instructor could find that much practical stuff for us to do in a SINGLE day!
===This is what I would do===
On your next clinical day, let EVERY nurse on your floor know that you will be glad to perform any skill that you are allowed to. Insert and remove foleys, do dressing changes, pass meds (if you know and are comfortable with the meds you are passing), start IV's or hang piggies (if you are allowed), do head to toe assessments, listen to abdominal and breath sounds, evaluate extremeties for edema, observe any and all special procedures done at the bedside, etc. Be sure you have provided your own patient care first, but avail yourself of any opportunity to learn. If opportunity does not come to you, you must make your own opportunities!