How to help my son in kindergarten get his grades up? ?

you should talk to your son

Kindergarten is more like 1st grade now. They are teaching letter sounds and reading. It isn't just " play" anymore.  The most important thing is that you find out " where your child is at", like is he working on learning his letters or ?? His teacher should be able to tell you. And then work with where he is at. Too many times Kindergarten children are pressured to learn at a higher level than where they are actually at. A child is not going to learn much if he is working at frustration level.  Make sure he is behaving and not messing around during your learning sessions.

Speak with the teacher and see what the teacher thinks

He'll pass if he goes everyday, so stop worrying about his grades.

How to Help Kids Get Better Grades

Have high but realistic expectations. We should always hold high but realistic expectations for our children. ...

Provide homework help. Creating homework space and offering help is a good thing. ...

Encouragement over praise. ...

Refrain from rewards if your child is intrinsically motivated.

Read to him.

Make your home rich with books and reading.

He is in kindergarten, all he needs to do is play and be a kid. There's a reason why many other nations don't begin formal schooling until age 7... because before that, kids are all over the map, there's no "average" score; it's a made up concept for reporting purposes. If you want a life-long learner, a child who enjoys learning, relax and focus on relationship. Read to him, play with him, get outside and explore, cook together, etc. 

I didn’t go to pre-K either.  Maybe improving your own English would help?

                             For Math Solutions 

•Snack time math

Give your child a small serving of finger food — Goldfish, grapes, that kind of thing — and have your child count them before eating. Have your child eat one — but only one! Now how many are there? Gradually as the snack gets eaten, the counting will evolve into mental math.

•Making math models

Nope, nothing to do with runways. In math, modeling means using real-life objects or pictures to show math problems. Ask your kindergartner to draw a kid who has 5 cookies and is getting 1 more cookie from a friend. That drawing counts as a math model!

•Use your hands

Before they can add 2 + 3 or subtract 4 – 1, kindergartners need to understand what adding and subtracting means. You can help! Collect a small pile of buttons. Have your child create a pile with 4 buttons and a pile with 2 buttons. Push those piles together to make a new pile with 6 buttons. Count the total together and explain to your child, “That’s addition!” Next, take 2 buttons away from the big pile. Together, count the 4 buttons left and explain to your child, “That’s subtraction!”

•Send them on a scavenger hunt

Which is bigger? Kindergartners need to be able to compare things by size. First, give your child a chopstick and send them on a scavenger hunt around the house (or a room) to find two items that are longer and four that are shorter. (That way, they practice counting, too.) Then hand your child a small ball and have them find two round things that are bigger. Is everything really bigger/smaller? You may get to test out your child’s logic skills with some of their answers.

•What should I do with these numbers?

Does your kindergartner know that when they hear a word problem about Santa eating cookies from a plate on Christmas Eve that subtraction is involved? Build this understanding by sharing lots of math stories with your child. Then stop and ask, “What’s happening? Do we need to add or subtract to figure out what is happening in this problem?” If talking about it doesn’t make sense, have your child draw a picture or use blocks to help bring the problem (and solution) to life.

•Which is smaller?

Kindergartners need to learn how numbers compare to each other. Help your child understand how the numbers four, five, and seven compare to each other by asking your child to draw a picture of four stars, a picture of five stars, and a picture of seven stars. Then ask your child to put them in order from low to high, and then high to low. Once your child masters these, try again with larger numbers (up to 20).

•Picture a place (value)

Counting, recognizing, and naming numbers is sooooo preschool! Now your kindergartner needs to know the value of each digit in a number. Drawing it out can help your child visualize the value behind a number. Ask your child to draw the number 13 using circles, for example, with one group of 10 circles and three loose ones. Once they can do this easily for 11 to 19, give your child larger numbers to draw.

•Get into shape!

Or shapes. Your child can probably point out and name basic shapes pretty easily, and even tell you how many sides each has. But can they make new shapes using a combination of others? Pull out the shape blocks and have your child create a rectangle or triangle. How many triangles do you use to make a square? Do the same with more advanced shapes, like pentagons and trapezoids.

•Think patterns

Is your kindergartner getting much pattern homework? A pattern is something that repeats, like square-circle-square-circle. It turns out, patterns are the foundation of algebraic thinking. And kids need to start early! You can help your child think in terms of patterns by pointing them out in art, music, or on clothing — whenever you notice in a pattern in your environment. Ask questions like, “What comes next to make this pattern repeat?”

•Tell me more

Explaining one’s thinking is a big part of Common Core math. When your child draws a picture to solve a math problem, ask them to explain their drawing and their thinking. Ask, “Where did you get those numbers?” and “Why are you adding instead of subtracting?” Lots of practice will help your child get comfortable explaining their thinking and prepare them for the higher level math that’s just around the corner.

                     For English Solutions 

•Play simple word games like I Spy and seek out things that begin with a certain letter. In the car, play games with road signs or license plates, such as having your kindergartner spot words or plates that begin with a specific letter.

•Perhaps the single most important thing you can do at this stage to foster your child’s reading and writing skills is to read to him every single day.

•Reading to your child isn't the only way to ensure that they become a strong reader as they get older. Singing songs together and familiarizing them with a range of lyrics will also help develop language skills.

• Also Using Flashcards, Watching Kid Friendly "Leaning English Words" YouTube Videos, and Online Vocabulary Games would Help :). 

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