[FIXED] Parenting Predicaments: Grades doesn't check off

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.91.205.1020
What expansions, game packs, and stuff packs do you have installed? I have most except Vampires, Werewolves, and Realm of Magic.
Steps: How can we find the bug ourselves? Play the Parenting Predicaments scenario. Get past the first level, which includes the children getting a good night's rest and creating a child-friendly environment. The next major step/level is improving the children's grades, and here lies the issue. 1. Even when I send both children to school with focused moodlets, it does not complete. It only shows "1/2". 2. Leonardo's grades are now at "A" average, but the goal for him to reach "B" average has never checked off. This has not happened in the case of Sofia. There is no way to get to the next level of the scenario until these items are checked.
What happens when the bug occurs? I have only played this scenario once and it happens when the goal of the scenario is to improve the grades of the children. I have read other posts where other players get past this, only to get stuck on another level. Worse still, others are stuck on the first step to get the children to sleep.
What do you expect to see? Firstly, I send the children to school with focused moodlets, and the goal to send both children to school focused will be complete and check off. Secondly, I expect Leonardo to have earned a B grade, and the respective goal to complete and check off.
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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I can't get to the next level until this is resolved.

Edit By Crinrict: Adjusted Title to better reflect the issue