What school subject do you think helps you the most in everyday life?

That is a toss up between English/grammar and math. Communication is important so people can understand you and you understand others. And use math everyday. If I am shopping I use it to figure a sale price. Or of I am cooking and need to adjust a recipe to  that it feeds two instead of four. Or if you need to adjust time because of using a convection oven, or the time in cooking because the portions are smaller. 

Math. Math is everywhere. If you're not using math everyday I'll be worried for you.

• Budgeting your monthly expenses
• Measuring and tracking the calories in  your food
• Managing your retirement
• Using Excel Spreadsheets for work and daily tasks.

Literacy/grammar/mastery of reading, writing and speaking the common tongue.

Absent that, the ability to function effectively is greatly impeded in nearly every facet of society.

Reading.

Reading and English

Writing and Reading . . . Communication is the foundation of society.

Reading

I should have paid more attention to math. I constantly am running percentages / ratios / etc. And it's a skill that I struggle with. I also believe English and reading and also most valuable skills to have.