What is the best way to thank and praise Allah for granting success in exams?

Gratitude for blessings is shown by expending them in ways that please Allah. The best form of praise is "All praise is due to Allah, Lord of the worlds," as stated in Al-Fatiha. Allah Almighty says, "My servant has praised Me," when the servant says, "All praise is due to Allah, Lord of the worlds." Also, among these forms is the saying of the Prophet, peace be upon him: "O Allah, our Lord, to You be all praise. You are the Sustainer of the heavens and the earth and all therein. To You be all praise. You are the Lord of the heavens and the earth and all therein. To You be all praise. You are the Light of the heavens and the earth and all therein. You are the Truth, Your word is the truth, Your promise is the truth, and meeting You is the truth." And among them is the supplication: "O Allah, I ask You, for to You belongs all praise. There is no god but You, the Bestower, the Originator of the heavens and the earth, O Possessor of majesty and honor, O Ever-Living, O Self-Subsisting, I ask You." And gratitude for blessings is shown by expending them in ways that please Allah, such as using what is gained from a certificate, whether money or otherwise, in the path of Allah, and spending on family and kin, and giving charity.