If anyone is trusting the teachings they received in Bible school or seminary, then they are not trusting Christ.
Sadly many people who attend these establishments think they are being told pure unadulterated truth, when often they are being indoctrinated into the thinking of men rather than the teachings of Christ.
They are being trained to believe that those who do not have human institutional training cannot possibly know the truths of the Bible. Even though they would say they don't think like this, they demonstrate that they do, by their arrogance in refusing to listen to anyone led by the Holy Spirit, who has not been trained in these institutions.
All you need is Christ, good teaching is beneficial, but all that comes from the mouth of man must be evaluated by the Word of God. To believe someone simply because they went to an institution that claimed Christianity, is to place one's trust in man rather than Christ.
John 16:13-14 "13 However, when the Spirit of truth comes, He will guide you into all truth. For He will not speak on His own, but He will speak what He hears, and He will declare to you what is to come. 14 He will glorify Me by taking from what is Mine and disclosing it to you.…"
For 1700 years after Christ made His sacrifice on the cross, there were no seminaries or Bible schools in the world. Men and Women of God were led by the Holy Spirit, their dependence on Him left them with greater wisdom and devotion to Him than we see today. Authentic believer's faith was greater because they depended entirely on Christ for their guidance.
We have more Bible schools and seminaries today in the world than ever before and far more apostasy among congregations. This is because our reliance on human wisdom and the acceptance of man has dominated our thinking. Very few believers are willing to stand alone to walk with Christ.
Luke 14:25-27
Discipleship Tested
25 Now large crowds were going along with Him; and He turned and said to them,
26 “If anyone comes to Me, and does not hate his own father and mother and wife and children and brothers and sisters, yes, and even his own life, he cannot be My disciple.
27 Whoever does not carry his own cross and come after Me cannot be My disciple. "