Yes! The Star-Strike System awards Stars and/or Strikes on a rolling two week basis, which means Averages, No-Show counts etc. are all based on your last two weeks on the platform.
Once you've gained a Strike, it will remain visible on your account for two weeks. I.e. If you were to gain a Strike on the 1st July, you'd first be able to remove it from your account on the 15th July.
Take note: Ringle does keep a record of accumulated Strikes (which you can see on the "Performance" tab), although this is not visible on your profile to students, nor does it otherwise impact your visibility or access to lessons on the platform.