Common reasons for Australia student visa rejection include inadequate financial proof, insufficient English language proficiency, incomplete or incorrect documentation, and failure to meet health and character requirements. Additionally, inconsistencies in the applicant's statement of purpose or a lack of genuine intent to study can lead to a visa refusal. To avoid these pitfalls, it's advisable to seek guidance from the best migration agents in Perth. They have the expertise to navigate the complexities of the visa process, ensuring all requirements are met and increasing the likelihood of a successful application.