Are Lao Xu and Nick's IELTS tests reliable?

Reliable. According to relevant data, IELTS in Lao Xu and Nick are both well-known IELTS training institutions, and their teaching quality and course effect have attracted the attention of candidates. Their IELTS courses are rich in content, strong in teachers and scientific in teaching methods, which have been well received by the majority of students, so they are relatively reliable IELTS training institutions.