Well.... after years of NO planning when the kids were small and not so busy, I determined about 5-6 years ago that I had to come up with SOME sort of meal planning/schedule/idea!
For a few years I planned MONTHS at a time, taking the usual sports practice schedules, weather, etc into consideration, but then when life got even crazier about 2 years ago, I changed it to weekly planning. I printed out index cards (color coded) for most of the meals in my regular rotation and I now spend just a bit of time near the end of the week (Thurs, Fri or Sat) to plan for the following week.
Things I take into consideration are the afterschool/evening schedule (who is here, who is away, who has practice/meeting, what's the weather, etc), what's in season (will we have fresh ??? from the garden or CSA, etc), what's been on sale lately (what is the freezer full of), and what is MY schedule like (crockpot meals or sandwich nights when Mom has a busy day). Then I really try to mix up the meals between meatless, pork, beef, etc. Our meals would probably look a bit odd to most folks because we have SEVERAL factors that figure into what we eat..... DS has several food allergies, including a poultry allergy, so no chicken on a regular basis, DH follows a low carb eating plan, so we rarely have a spaghetti night and anything else has to have the carbs on the SIDE, and I follow WW (5 years of maintenance now!

), so I am careful about my portion sizes, calories, and fat content.
Once I have figured out all of this it is easy to pull menu cards from my file and put them in my hanging menu board......
(since this photo was taken I have moved the "day" stickers to the bottom of each section so that the full menu can be seen better.)
Blue is for meatless, orange is for chicken/poultry, purple is for pork, pink is for beef, and I also have several white cards for things like "Sandwich night", "Leftover night", "Eating out" and "Every man for himself!". If it is a meal from a recipe from a cookbook, I tried to put the name of the cookbook and the specific page number on the pack of the menu card. I have been trying to winnow down my cookbook collection, so most of my regularly-used recipes are in a binder system (white binder for "tried and true" recipes, purple binder for "yet to be tried" recipes).
Here is an example of last week here....
DD was home for Spring Break, so I made a few of her favorites, DH was away one night, so we planned a "carb night", and the weather was cold so we had lots of warm comfort foods like soups....
Sunday: homemade pizza and salad.... I am able to make a low carb pizza for DH and a low cal pizza for myself, and the kiddos shared a pizza on homemade whole wheat crust.
Monday: Curried carrot soup, cheese and whole wheat crackers (a favorite of both of the kids).
Tuesday: (I work Tuesday nights, so this is usually a crockpot meal). Mulligatawny soup
Wednesday: Curried chicken and brown rice (made with pork so that DS could eat it.... another of DD's favorites)
Thursday: Baked potato night (DH was away).... this usually consists of one large baked potato for each person plus a variety of toppings (depending on what is in the fridge for leftovers, etc)... shredded cheese or homemade cheese sauce, salsa, grilled veggies and a side of homemade apple sauce or some sort of fruit.
Friday: Homemade Boloco night (a small chain similar to Chipotle)... again, it is a "make-your-own" bar type of night.... grilled fajita veggies, guacamole, beans (whole and refried), brown rice, lettuce, shredded cheese, and occasionally a small offering of shredded/diced meat of some sort, if I have it available.
Anyhow... I often leave at least one day out of every 7-10 as a leftover night to keep us from getting overloaded (plus we use leftover for lunches). If we don't have any leftovers to use, it will be a sandwich night or a scrambled egg night.
I make notes on my menu board about anything that I want to prep ahead of time (for example, last week I prepped the onions for the whole week on Sunday, as nearly every night had onions in it somewhere!). I also pull out everything from the week from the freezer on Sunday if I have room in the fridge, so I don't forget anything.... and often a large hunk of frozen meat will take 3-4 days at least to defrost in the fridge.
If a meal doesn't seem to be making it into the line up very often or doesn't meet with group approval it will get pulled from the book and tossed, along with the corresponding recipe. No sense in keeping something we don't use. We recently made the decision to be a seafood-free household, so I had to pull all of my recipe cards that included seafood. NBD.
Anyhow.... good luck with your meal planning! Sorry to ramble on so much!....P
ETA: I dislike cooking and I kind of resent the time it takes, so the crockpot is a near and dear friend! If you DON'T own one, I suggest you look into it. I own 4 and I use them ALL!!