You and your Catholic Catechists may be shocked to realize that salvation by works is a heresy that has been condemned since the earliest centuries of Christianity. Pelagius taught that we could work our way to Heaven through our own merits, apart from sanctifying grace. Apparently he is alive and well for you. For faithful Catholics, we acknowledge that we are saved by grace alone, a gratuitous gift of God that cannot be earned.
The council of Trent put it this way, in session 6, chap 8 maintaining that its
all a work of grace:
“…none of those things that precede justification, whether faith or works, merit the grace of justification.”
Once freely justified-
made just- by God, though, we’re expected to
walk like it, and that involves continuous
choice, to will and to act like His children, remaining in Him so we continue to live in the Spirit, under grace. So Trent goes on:
“If anyone says that man can be justified before God by his own works, whether done by his own natural powers or through the teaching of the law, without divine grace through Jesus Christ, let him be anathema.”
Any works must be from God as per Eph 2:10, “under grace”, not of our own, not “under the law”. Trent continues, while also emphasizing the need for our cooperation:
“If anyone says that the just ought not for the good works done in God to expect and hope for an eternal reward from God through His mercy and the merit of Jesus Christ, if by doing well and by keeping the divine commandments they persevere to the end, let him be anathema.”
The catechism echoes all this:
2007 With regard to God, there is no strict right to any merit on the part of man. Between God and us there is an immeasurable inequality, for we have received everything from him, our Creator.
2008 The merit of man before God in the Christian life arises from the fact that God has freely chosen to associate man with the work of his grace . The fatherly action of God is first on his own initiative, and then follows man’s free acting through his collaboration, so that the merit of good works is to be attributed in the first place to the grace of God, then to the faithful. Man’s merit, moreover, itself is due to God, for his good actions proceed in Christ, from the predispositions and assistance given by the Holy Spirit.
2010 Since the initiative belongs to God in the order of grace, no one can merit the initial grace of forgiveness and justification, at the beginning of conversion. Moved by the Holy Spirit and by charity, we can then merit for ourselves and for others the graces needed for our sanctification, for the increase of grace and charity, and for the attainment of eternal life. Even temporal goods like health and friendship can be merited in accordance with God’s wisdom. These graces and goods are the object of Christian prayer. Prayer attends to the grace we need for meritorious actions.
I think most Catholic teachers understand this, and the error of Pelagius, but some may not.