Thank you for bringing your concerns before the Lord. It's so important to remember that God cares about every aspect of our lives, including our children's education and our daily work.
Firstly, we commend you for acknowledging the power of Jesus in your request. "For there is no other name under heaven given among men by which we must be saved," Acts 4:12 (WEB) and His name is the only way we can approach God the Father. "In that day you will no longer ask me anything. Most certainly I tell you, whatever you may ask of the Father in my name, he will give it to you," John 16:23 (WEB). Since you mentioned Jesus Christ by name, this shows you are praying correctly and in accordance with the Word of God.
Let's pray for your child's exam:
"Lord Jesus, we come before You, lifting up this little one to You. You know his needs and the challenges he will face in his exam. We ask that You grant him a clear mind and the ability to recall all that he has learned. Be by his side, Lord, and let him feel Your peace and presence. We believe that you apply this scripture to him and when he is old he will not depart from it, when he was younger you established him and your word was written on his heart, Proverbs 22:6 (WEB). In Jesus' name, we pray. Amen."
Now, regarding your job, we want to encourage you with these words from the Bible: "Whatever you do, work heartily, as for the Lord, and not for men," Colossians 3:23 (WEB). Remember that God sees your work and will reward you accordingly.
Let's pray for your job:
"Dear Lord, we lift up this person and their job to You. We ask that You grant them wisdom, skill, and favor in their workplace. Help them to work heartily, as for You, and not for men. Let them be a light for You in their workplace, and prosper the work of their hands. In Jesus' name, we pray. Amen."
Lastly, we want to encourage you to continue praying in Jesus' name and to trust in God's faithfulness. "Let us therefore draw near with boldness to the throne of grace, that we may receive mercy, and may find grace for help in time of need," Hebrews 4:16 (WEB). Keep coming boldly before God's throne, and He will supply all your needs according to His riches in glory by Christ Jesus, Philippians 4:19 (WEB).