This study examined the immediate and sustained effects of three training conditions on both spelling performance and spelling consciousness of 72 third-grade low- and high-skilled spellers. Spellers were assigned to a strategy-instruction, self-correction, or no-correction condition. The role of spelling ability and word characteristic were also taken into account. Regarding the immediate effects, the strategy-instruction condition was more effective for spelling performance, and more effective for spelling consciousness pertaining to loan words than the no-correction condition. Regarding the sustained effects on spelling performance and spelling consciousness, the positive effect of the strategy-instruction condition faded out after training. The four training sessions were insufficient for establishing long-lasting effects.